Cantilever crane Cantilever crane is a new generation of light lifting equipment made to adapt to modern production, with high reliability chain electric hoist is especially suitable for short distance, frequent use, intensive lifting operations, with high efficiency, energy saving, easy to operate and maintain. The mobile cantilever crane is more flexible and adaptable, and it is a necessary individual emergency lifting equipment on the efficient automatic production line, which can ensure the smooth flow of the production line. The cantilever crane manipulator is composed of lifting arm, supporting column, supporting arm, electric hoist, motor and so on. The boom is the main part of the suspension material, and the supporting column and the supporting arm are the important parts of the supporting boom, which can ensure the stability of the boom. The electric hoist and motor are the power source of the cantilever crane, which can provide enough power to make the boom run smoothly…